How to get redirected URL and content using HttpURLConnection

Question

Sometimes my URL will redirect to a new page, so I want to get the URL of the new page.

Here is my code:

URL url = new URL(\"http://stackoverflow.com         


        

Answer 1

actually we can use HttpClient, which we can set HttpClient.followRedirect(true) HttpClinent will handle the redirect things.

Answer 2

Simply call getUrl() on URLConnection instance after calling getInputStream():

URLConnection con = new URL(url).openConnection();
System.out.println("Orignal URL: " + con.getURL());
con.connect();
System.out.println("Connected URL: " + con.getURL());
InputStream is = con.getInputStream();
System.out.println("Redirected URL: " + con.getURL());
is.close();

If you need to know whether the redirection happened before actually getting it's contents, here is the sample code:

HttpURLConnection con = (HttpURLConnection) (new URL(url).openConnection());
con.setInstanceFollowRedirects(false);
con.connect();
int responseCode = con.getResponseCode();
System.out.println(responseCode);
String location = con.getHeaderField("Location");
System.out.println(location);